ruby laser autonivel there BE : am, is, are, was, were, been, being
DO : do, does, did
HAVE : have, has, had
MODALS : must, will, would, can, could, may, might, shall, should, need, ought to
Present simple tense:
I live in Turkey.
I don’t live in Turkey.
Do you live in Turkey?
Past simple tense:
They played football yesterday.
They didn’t play football yesterday.
Did they play football yesterday?
I do housework on Sundays.
I don’t do housework on Sundays.
They did shopping yesterday.
They didn’t do shopping yesterday.
He’s gone abroad.
He IS readING a book.
He WAS readING a book.
He has BEEN readING a book.
He had BEEN readING a book.
He will BE readING a book.
I play football. (Correct: present simple)
I am playing football. (Correct: present continuous)
I playing football. (Wrong: no such tense)
I am play football. (Wrong: no such tense)
You must go . (correct)
You must to go. (wrong)
You must going . (wrong)